user
You need to complete the following task:

Analyze the conversation and identify examples of persuasion.

John: "You should really consider investing in this new startup. It has a lot of potential" 
Mary: "I don't know, I'm not sure if it's a good idea.

Answer:
assistant
John is using persuasion by making a recommendation and trying to convince Mary to take his advice. He is emphasizing the potential of the startup in order to convince Mary to invest.